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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdint.h>
#include <amqp.h>
#include <amqp_framing.h>
#include <unistd.h>
#include <assert.h>
#include "example_utils.h"
/* Private: compiled out in NDEBUG mode */
extern void amqp_dump(void const *buffer, size_t len);
int main(int argc, char const * const *argv) {
char const *hostname;
int port;
char const *exchange;
char const *bindingkey;
int sockfd;
amqp_connection_state_t conn;
amqp_bytes_t queuename;
if (argc < 5) {
fprintf(stderr, "Usage: amqp_listen host port exchange bindingkey\n");
return 1;
}
hostname = argv[1];
port = atoi(argv[2]);
exchange = argv[3];
bindingkey = argv[4];
conn = amqp_new_connection();
die_on_error(sockfd = amqp_open_socket(hostname, port), "Opening socket");
amqp_set_sockfd(conn, sockfd);
die_on_amqp_error(amqp_login(conn, "/", 131072, AMQP_SASL_METHOD_PLAIN, "guest", "guest"),
"Logging in");
{
amqp_queue_declare_ok_t *r = amqp_queue_declare(conn, 1, AMQP_EMPTY_BYTES, 0, 0, 0, 1,
AMQP_EMPTY_TABLE);
die_on_amqp_error(amqp_rpc_reply, "Declaring queue");
queuename = amqp_bytes_malloc_dup(r->queue);
if (queuename.bytes == NULL) {
die_on_error(-ENOMEM, "Copying queue name");
}
}
amqp_queue_bind(conn, 1, queuename, amqp_cstring_bytes(exchange), amqp_cstring_bytes(bindingkey),
AMQP_EMPTY_TABLE);
die_on_amqp_error(amqp_rpc_reply, "Binding queue");
amqp_basic_consume(conn, 1, queuename, AMQP_EMPTY_BYTES, 0, 1, 0);
die_on_amqp_error(amqp_rpc_reply, "Consuming");
{
amqp_frame_t frame;
int result;
amqp_basic_deliver_t *d;
amqp_basic_properties_t *p;
size_t body_target;
size_t body_received;
while (1) {
amqp_maybe_release_buffers(conn);
result = amqp_simple_wait_frame(conn, &frame);
printf("Result %d\n", result);
if (result <= 0)
break;
printf("Frame type %d, channel %d\n", frame.frame_type, frame.channel);
if (frame.frame_type != AMQP_FRAME_METHOD)
continue;
printf("Method %s\n", amqp_method_name(frame.payload.method.id));
if (frame.payload.method.id != AMQP_BASIC_DELIVER_METHOD)
continue;
d = (amqp_basic_deliver_t *) frame.payload.method.decoded;
printf("Delivery %u, exchange %.*s routingkey %.*s\n",
(unsigned) d->delivery_tag,
(int) d->exchange.len, (char *) d->exchange.bytes,
(int) d->routing_key.len, (char *) d->routing_key.bytes);
result = amqp_simple_wait_frame(conn, &frame);
if (result <= 0)
break;
if (frame.frame_type != AMQP_FRAME_HEADER) {
fprintf(stderr, "Expected header!");
abort();
}
p = (amqp_basic_properties_t *) frame.payload.properties.decoded;
if (p->_flags & AMQP_BASIC_CONTENT_TYPE_FLAG) {
printf("Content-type: %.*s\n",
(int) p->content_type.len, (char *) p->content_type.bytes);
}
printf("----\n");
body_target = frame.payload.properties.body_size;
body_received = 0;
while (body_received < body_target) {
result = amqp_simple_wait_frame(conn, &frame);
if (result <= 0)
break;
if (frame.frame_type != AMQP_FRAME_BODY) {
fprintf(stderr, "Expected body!");
abort();
}
body_received += frame.payload.body_fragment.len;
assert(body_received <= body_target);
amqp_dump(frame.payload.body_fragment.bytes,
frame.payload.body_fragment.len);
}
if (body_received != body_target) {
/* Can only happen when amqp_simple_wait_frame returns <= 0 */
/* We break here to close the connection */
break;
}
}
}
die_on_amqp_error(amqp_channel_close(conn, AMQP_REPLY_SUCCESS), "Closing channel");
die_on_amqp_error(amqp_connection_close(conn, AMQP_REPLY_SUCCESS), "Closing connection");
amqp_destroy_connection(conn);
die_on_error(close(sockfd), "Closing socket");
return 0;
}
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